Manufacture of writing pens



Jan. 14, 1941. H. ASHMORE -2,228,250-

umumcwunn OF WRITING PENS Original Filed Aug. 27, 1955 Z Z J 5INVENTEIR= 5 Y LBnnHEhlHshmurE,

Patented Jan. 14, 1941 UNITED STATES PATENT OFFICE MANUFACTURE OFWRITING- PENS Application August 27, 1935, Serial No. 38,024 RenewedApril 12, 1940 3 Claims.

My invention relates to the manufacture of metal writing pens, and oneobject of my invention is to produce pen stock metal with a turned overor folded edge from which blanks to subsequently form pens and/or penpoints may be stamped or out.

A further object of my invention is to perma-,

nently connect the turned over or folded edge portion with the body ofthe stock.

And a still further object of my invention is to create a hardness inthe turned over or folded and permanently secured edge of the metal penstock.

My invention comprises certain improvements in the pen stock; the methodof making the same; the blanks cut or'stamped from such stock andsubsequently formed into pens and/or pen points, and the method ofmaking such pens and/or pen points.

Other features of my invention will be pointed out hereinafter inconnection with the accompanying drawing, more or less diagrammatic incharacter, in which:

Figure 1 is a fragmentary perspective view of pen stock with a turnedover or folded edge,

within the scope of my invention.

Fig. 2 is an enlarged sectional view of such turned over or folded edge.

Figs. 3 and 4 illustrate one manner of cutting blanks from my improvedpen stock.

Fig. 5 is a side elevation of a pen made from stock of the charactershown in Fig. 1, and

Figs. 6 and 7 represent a front elevation and an inverted plan view,respectively, of the writing tip end of a pen or pen point made fromsuch stock.

It is desirable that Writing pens of many kinds, including thoseemployed with fountain pens, shall have a thickened and, in largemeasure, a

wear-resisting writing tip end. In my application for patent filed July2'7, 1934, Serial No.

737,307, I have described and claimed a pen made from a blank producedfrom stock having a turned-over or folded edge.

This folded part is in close engagement with the body of the stock, butit is not permanently connected therewith; hence, excessive wearmaystrip the turned over or folded portion from such body. I propose toovercome this difiiculty by permanently securing, as by welding,brazing, soldering, or otherwise, the turned over or folded edge portionto the body of the stock and subjecting it to such treatment, which maybe a heat treatment, simultaneously with or subsequently to the weldingor other securing operation, as will effect a hardening of the turnedover or folded portion. It will be understood, of course, that the metalemployed may be of a nature permitting hardening by heat treatment orotherwise.

In Fig. 1, I have shown a perspective View of a portion of pen stockwithin the scope of my invention, the main body thereof being indicatedat A, and the turned over or folded edge being indicated at a. Thisturned over or folded edge is permanently secured to the main body ofthe stock as by Welding, brazing, soldering, or the like, and suchwelding or other securing operation may take place simultaneously withthe last step in the operation which effects the close contact of suchturned edge With the body of the stock or at some time subsequently tothe completion of such turned-over edge. By such Welding or othersecuring operation, the turned over and/or folded edge becomes anintegral part of the stock, the line of union being indicated at a.

The operation of permanently fastening the turned over or folded edgeportion of the pen stock may include some treatment, such as a hammeringor rolling operation, that will tend to harden the turned over or foldededge; thereby increasing the wearing qualities of the pen. Thiswork-hardening effect is concentrated at the point of greatest wear, theportions of the nibs formed from such turned or folded edge of the stockwhich contact with the paper.

The blanks from which my improved pens are made may be out from penstock of the character illustrated in Fig. 1, in the manner shown inFigs. 3 and 4, wherein the turned or folded edge is shown as being atthe underside of the stock while being blanked; blanks for theproduction of straight pens being shown in Fig. 3, and blanks for theproduction of stub pens, Whose writing tip points are at an angle totheir longitudinal axes, being shown in Fig. 4.

It will be understood that the amount of metal turned over andpermanently secured in place may be of any Width desirable for thewriting tip end of the pen and/or pen point, and that it may be slightlybeveled at its rear edge portion, as indicated by the dotted line :27,Figs. 1 and 2. It will also be understood that, within certain limits,depending upon the character of the metal employed, the contour of theturned over or folded edge may be modified as desired, during orsubsequent to the rolling or other operation to produce the same, orafter the operation of permanently securing the turned over or foldededge portion to the body of the pen stock.

The blanks may be stamped from this prepared metal in any usual way andsubsequently pierced, slit, and raised to finished pens in the manner,for instance, set forth in my pending application; such treatmentincluding a finishing operation designed to smooth angularities, butwhich does not affect in any way any hardening step that may have beenapplied to the folded and permanently secured edge which subsequentlybecomes the writing tip portion of the pen.

Pens and/r pen points made from stock of this type will have a writingtip end such as that illustrated in Figs. 5, 6, and '7, wherein the bodyof the pen is indicated at I, the nibs at 2, and the thickened andpermanently secured edge portion of the stock, which is at the nib endsof said pen, at 3.

Inasmuch as the work incidental to the permanent fastening of the turnedover or folded edge may include a step that will harden the thickenededge thus produced, the manufacture of pens and/or pen points of thisparticular character from stainless steel stock with a folded edge soprepared and permanently secured in place is an important feature of myinvention, since such material will provide a pen and/ or pen point witha writing tip end highly resistant to wear.

Modifications may be made in the foregoing embodiment of my inventionwithout departing from the spirit and scope of the same as set forth inthe appended claims.

I claim:

1. The method of producing blanks for the manufacture of pens and/or penpoints: which comprises preparing sheet metal pen stock by folding anarrow edge of the stock into close contact with its body; thereafterpermanently securing such folded edge in close engagement with such bodyunder a heat treatment sufficient to produce a hardened zone coterminouswith such folded edge, and cutting pen blanks from such stock with thefolded edge portion at the end. which becomes the writing tip of the penor pen point.

2. The method of producing blanks for the manufacture of pens and/or penpoints which comprises providing stainless ferrous metal stock in stripform; folding a narrow edge of such stock over against its body;thereafter permanently securing such folded edge in close engagementwith such body under a heat treatment sufficient to produce a hardenedzone coterminous with such folded edge, and cutting blanks from suchstock with the folded portion at the end which becomes the writing tipof the pen or pen point.

3. The method of producing blanks for the manufacture of writing pens orpen points which comprises preparing stainless metal stock in stripform; folding a narrow edge of the stock; pressing such folded edge incontact with its body by a combined rolling and drawing operation;thereafter permanently securing such folded edge into integralengagement with such body under a heat treatment sufficient to produce ahardened zone coterminous with such folded edge, and cutting blanks fromsuch stock with the folded portion at the end which becomes the writingtip of the pen or pen point.

LEON HEHL ASI-IMORE.

